Trolley-wheel.



PATENTED DEG- 1,.-0, 1907.

E. N. LUBURG.' TROLLEY WHEEL. APPLICATION FILED SEPT. 18,1906.

w/ /vzess 6M WM W 14/ MN 70 Mam 2/ corner of Jackson and Taylor streets,Home- I arms sleeve and pin not revolving.

casing 7 which may be made integral with shown.

4 is a sleeve .feathered. on to pin 3. by

UNITED s'r Tnsf'rK'rENT OFFICE.

ELLsWoR rH- .EESON M RE-MA SELAN 1".) all whom it'may concern."

Be it known that I, EL swo'RTH NLLSON LUBURG, a citizen of the UnitedStates, residing at and whose post-office address is stead, Baltimorecity, in the State of Maryland, have invented a new and usefulTrolley-Wheel, of which the following is a speci- "fication. a

My invention relates a impr .ements in trolley-wheels such as al use".on electric trolley cars; and the object I of my improvement are,.first,durability 11.1 the life of the bearing; second, improved means oflubrication; and third, means of preventing dust and grit from gettinginto the bearing. I attain these objects by the mechanism illustrated inthe accompanying drawing, in which Figure -1' is a view in elevation ofmy trolleywheel with the. oil cap, and one side of the wearing ringsremoved; and Fig. 2, is a sectional view of my improvement taken through1313 of Fig. 1 before the removal of any of parts. S1milar numerals'refer to similar parts throughout the several views.

1 is the trolley-wheel having groove 2 in which the trolley wire notshown works.

3 is the pin or axle which secures the trolley wheel'to the fork of thetrolley pole not feather and keyway5. On sleeve 4: are attached arms 6which are shaped at their extremities for scooping oil from outsidecasing 7 and bringing it towards the center, said Outside and forming apart of the trolley wheel or may be an independent bushing In the sameis barred over at'the ends to secure oil caps 8 in position and make thesame oil tight at its outside circumference. Between sleeve 4 andoutside casing 7 and confined between oil caps 8'and arms 6 are aplurality of nesting rings 9,10, 11, 12, 13 and 14 which form betweenthemselves wearing orbeari sur-. faces. It is preferable but notessentia that the wearing surfaces be of different materials.

' oil hole 15.

15 is an oil hole through trolley wheel 1 and 16 is a screw or plug foroutside casing 7 17 is a groove in the interior surface of outsidecasing 7 for .the circulaa I tionof oil. as:

The, operation of my invention i sias fol- Specification bfLetters'Patent. I, 1 Atfillcfmbn filed $ptembar 13.1905." seiia No.;278.832. 1

'' mots; iAA-BYL ND,Assiiiiion-oF-oNE-THIRn ro :Trnan fE-O A'L B'ERTHENRYA-SMITH, or BALTI-x I lows Outside casing 7 and oil ca s form anoil receptacle which is periodica 1y filled; as the wheel revolves theoil tends to pass out- .vafl to groove 17, it is thenscraped OE and b1.ught back to the center by immovable arms 6 when it enters between thenesting rings and works its way to-the periphery again. The nestingrings form a plurality of wearing surfaces, the trolley wearing on oneset of nesting rings until they become warm and sticky when they mayadhere and a new set of rings come into 0 eration, allowing the firstset to cool an become lubricated again, this intermittent process taki 5place indefinitely, or they may all work si-.

multaneously.

What I claim and desire to secure by etters Patent is:

1. The combination of a'wheel, abea ing in the hub thereof comprising acaslng laving a lon 'tudinal groove therein, a stationary mem eroperating in said casing having arms for sweeping the lubricant fromsaid ratenta. Dec. 10,1907."

casing and conveying it inwardly, and a plurality of concentric wearingrings on each side of sa1d stationary member.

I .2. The combination of, a'wheel forming a. casing in the hub thereof,a stationary member operating in said casing and formed to conveyluiricant from the inner surface of said casin inwardly and wearingrings at the 1 .lub'ricant from the inner surface of said casinginwardly, wearing rings at the side of said stationary member, and meansfor retaining the lubricant in said casing.

5. An axle, amember'secured to saidaxle having means for conveyinlubricant. from a moving surrounding mem er towards said axle, incombination with a rotating body forming said surrounding member andaplurality of vearing rings in sa1d surrounding member in communicationwith said member secured to said axle whereby lubricant said casinginwardly, wearing rings at the 10 may be conveyed to the said Wearingrings, side of said stationary member, means for means for retaininglubricant insaid easing, retaining lubricant in said casing, and meansand means of introducing lubricant through for introducing lubricantthrough the pet} the'periphery of said casing. riphery of said casing.

6. The combination of a wheel forming a nntswowru NELSON 'LUBURG.oasingin-the hub thereof, a stationary mern- Witnesses:

ber operating in said casing and formed to ROBT. E. GERHARDT,

convey lubricant from the inner surface of ALBERT H. SMITH;

